Nearly 300 species of landbirds, whose populations total billions, migrate between the
Neotropics and North America. Many migratory populations are in steep decline, and …

Birds must contend with an array of anthropogenic threats during their migratory journeys.
Many migrants are killed due to encounters with artificial light, introduced species …

Long-distance migratory organisms are under strong selection to migrate quickly. Stopovers
demand more time than flying and are used by individuals to refuel during migration, but the …

Migratory birds travel vast distances and the timing of migratory flights can affect survival and
the ability to reproduce. For Neotropical migrant songbirds, early spring departure from …

Abstract Sierra Nevada of Santa Marta (SNSM), Colombia, has been considered the world's
most irreplaceable nature reserve. However, little is known about how human activities are …

During long‐distance spring migrations, birds may rest and refuel at numerous stopover
sites while minimizing the time to reach the breeding grounds. If habitat is limited along the …

Aim A full annual cycle approach to conservation and understanding of regional population
trends requires an understanding of migratory connectivity. We present tracking data on the …

Of the approximately 716 bird species that breed in North America, 386 (54%) are
considered Nearctic–Neotropical migrants by the US Fish and Wildlife Service. In the past …

The tropical Andes are characterized by extreme topographic and climatic complexity, which
has likely contributed to their outstanding current species diversity, composed of many range …

Our study contributes to the ongoing dialogue on the impact of climate and habitat changes
on migratory bird species, particularly focusing on how these effects vary based on species' …